VIT Engineering VIT Engineering Solved Paper-2014

  • question_answer
    If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \[\Delta {{T}_{b}},\]the ebullioscopic constant of water is

    A) 10                                          

    B) 100 \[{{T}_{b}}\]

    C) \[\Delta {{T}_{b}},\]                       

    D) \[\frac{\Delta {{T}_{b}}}{10}\]

    Correct Answer: C

    Solution :

    We know that,  \[=\frac{5R}{36}\]                            \[\lambda =\frac{36}{5R}\]                            \[e{{v}_{0}}+\phi =\frac{hc}{\lambda }\]                            \[ev{{'}_{0}}+{{\phi }_{0}}^{'}=\frac{hc}{\lambda '}\]


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